What is the little key symbol by the database?

I’m new user to Devonthink. Not familiar with the meaning of the key next to the name of the database. When I export the database to back it up the new one does not have it.
Thank you in advance for the guidance.

Welcome @Ajit

The key next to a database’s name in the Navigate sidebar indicates it’s an encrypted database.

And that’s correct. Creating a database archive creates a ZIP of the database itself, not the encrypted volume on which it’s located.

This is mentioned in the Menus > The File Menu > Import & Export section of the Help and manual